1 | var _Promise = require("@babel/runtime-corejs2/core-js/promise");
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2 | var _Symbol = require("@babel/runtime-corejs2/core-js/symbol");
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3 | var OverloadYield = require("./OverloadYield.js");
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4 | function AsyncGenerator(gen) {
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5 | var front, back;
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6 | function resume(key, arg) {
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7 | try {
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8 | var result = gen[key](arg),
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9 | value = result.value,
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10 | overloaded = value instanceof OverloadYield;
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11 | _Promise.resolve(overloaded ? value.v : value).then(function (arg) {
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12 | if (overloaded) {
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13 | var nextKey = "return" === key ? "return" : "next";
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14 | if (!value.k || arg.done) return resume(nextKey, arg);
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15 | arg = gen[nextKey](arg).value;
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16 | }
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17 | settle(result.done ? "return" : "normal", arg);
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18 | }, function (err) {
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19 | resume("throw", err);
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20 | });
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21 | } catch (err) {
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22 | settle("throw", err);
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23 | }
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24 | }
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25 | function settle(type, value) {
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26 | switch (type) {
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27 | case "return":
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28 | front.resolve({
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29 | value: value,
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30 | done: !0
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31 | });
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32 | break;
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33 | case "throw":
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34 | front.reject(value);
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35 | break;
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36 | default:
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37 | front.resolve({
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38 | value: value,
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39 | done: !1
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40 | });
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41 | }
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42 | (front = front.next) ? resume(front.key, front.arg) : back = null;
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43 | }
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44 | this._invoke = function (key, arg) {
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45 | return new _Promise(function (resolve, reject) {
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46 | var request = {
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47 | key: key,
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48 | arg: arg,
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49 | resolve: resolve,
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50 | reject: reject,
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51 | next: null
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52 | };
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53 | back ? back = back.next = request : (front = back = request, resume(key, arg));
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54 | });
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55 | }, "function" != typeof gen["return"] && (this["return"] = void 0);
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56 | }
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57 | AsyncGenerator.prototype["function" == typeof _Symbol && _Symbol.asyncIterator || "@@asyncIterator"] = function () {
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58 | return this;
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59 | }, AsyncGenerator.prototype.next = function (arg) {
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60 | return this._invoke("next", arg);
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61 | }, AsyncGenerator.prototype["throw"] = function (arg) {
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62 | return this._invoke("throw", arg);
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63 | }, AsyncGenerator.prototype["return"] = function (arg) {
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64 | return this._invoke("return", arg);
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65 | };
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66 | module.exports = AsyncGenerator, module.exports.__esModule = true, module.exports["default"] = module.exports; |
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